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首页> 外文期刊>Crystal growth & design >Synthesis of 3-D hierarchical dendrites of lead chalcogenides in large scale via microwave-assistant method
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Synthesis of 3-D hierarchical dendrites of lead chalcogenides in large scale via microwave-assistant method

机译：微波辅助法大规模合成硫属元素铅的3-D分层枝晶

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摘要

Hierarchical superstructures of lead chalcogenides (PbS, PbSe, and PbTe) have been fabricated in large scale via microwave-assistant method. The FESEM and HRTEM images showed that dendritic and six-armed PbS superstructures were constructed with prism-shaped branches which grew epitaxially from the backbone of PbS. Detailed experiments revealed that PbS microcrystals with different morphologies (cubes, six-pods, bugle-like dendrites, and six-armed dendrites) could be simply fabricated by adjusting the reaction conditions (initial concentration of precursors or sulfur source). The results implied that the formation of 3-D hierarchical structures was controlled by the kinetic conditions. In addition, the dendrites of PbSe and PbTe have also been fabricated by the assistance of appropriate reductive reagent in a similar method.
机译：铅辅助硫属元素（PbS，PbSe和PbTe）的层级超结构已通过微波辅助方法大规模制造。 FESEM和HRTEM图像显示，树状和六臂PbS上层结构的结构是从PbS骨架外延生长的棱柱状分支。详细的实验表明，可以通过调节反应条件（前体或硫源的初始浓度）简单地制备具有不同形态（立方体，六荚果，号角状树突和六臂树突）的PbS微晶。结果表明3-D分层结构的形成受动力学条件的控制。此外，还通过类似方法在适当的还原剂的帮助下制备了PbSe和PbTe的树枝状晶体。

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